Explosions were heard in kyiv, writes the Publica newspaper. The head of the military administration in the capital, Sergei Popko, said that air defences were in operation on the outskirts. He urged residents to stay in shelters until the air raid warning was over.
The kyiv Regional Military Administration also reports on the work of air defence.
An air raid alert has been declared in the Ukrainian regions of Rivne, Zhytomyr, Chernihiv, Sumy, Poltava and Kharkov.
Explosions occurred in Sumy about two hours ago, according to reports from Obshchestvennoe and other Ukrainian media.